>>291263They generally have trouble below 60F and above 95F. Some will still germinate at those temps, but the success rate starts dropping off on both ends as you go past them. They'll likely not germinate at all below 50F, if you're looking for an extreme low end temperature.
And it depends on the variety, but that's a good range to stay in.
Also, at 60-75F, they're going to germinate much slower, so you may want to shoot for 80-85F.
